President of their association U.B. Wasantha accused the government of failing to address their request for a pension.
The protestors are trying to make their way to the presidential secretariat to handover a petition.
The stretch of road from Lotus Roundabout and Galle Face Roundabout remain closed, and vehicular movements in the area are disrupted.
The protestors are threatening to stage a fast in front of Colombo Fort railway station if their demand is not met.